Portable sidewalk



FIG. 1 is a top front perspective view of the portable sidewalk of the present invention;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

I claim the ornamental design for a portable sidewalk, as shown and described. 